Smart Communications Ltd SCU99BL Benutzerhandbuch

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TRANSCEIVER DETAILS 
 
The various controls and features are enumerated and pointed out in the views shown on 
page 5. 
 
ON/OFF/Volume Control-Turning this control in the clockwise direction turns the Unit 
On.  Turning it further in the clockwise direction increases the volume. 
 
Channel Selector
-This control is used to change the channel number. 
 
Squelch Control-This control is used to eliminate speaker noise and reduce battery drain 
while not receiving a transmission.  To squelch the Unit, turn the control clockwise. 
 
Antenna Connector- The supplied helical antenna is installed on the TNC type 
Connector. 
 
TX/BUSY -This indicator lights RED when transmitting and lights GREEN when a 
signal is being received or the radio is un-squelched (this is a helpful guide in setting the 
Squelch Control).  This indicator blinks RED when the PTT is pressed and the 
battery is low. 
 
Speaker- Radio’s internal speaker. 
 
Microphone- Radio’s internal microphone. 
 
External Speaker Jack- This 3.5 MM jack can be used to connect an 8-Ohm external 
speaker or earphone.  No sound will be heard from the built in speaker when a plug is 
installed in this jack.  To keep dust and moisture out of the radio keep the protective plug 
in place when the jack is not used. 
 
External Microphone Jack-This 2.5 MM jack is used to connect an external 
microphone to the Transceiver.  The internal microphone is disconnected when the 
external microphone is used.  Keep the protective plug in place when the jack is not used. 
 
Programming Jack-This is used for cloning and programming the radio. 
 
Antenna – TNC Type helical wound antenna. 
 
Function-The FUNC button provides the User the ability to put the Radio in one of two 
modes.  The Two modes are Monitor Mode and Sub-Audible Tone (CTCSS/DCS) Mode.   
Push To Talk Button- This button is used to switch between transmission and reception.  
To transmit, hold in this button.  Releasing this button will return the Transceiver to the 
reception mode. 
 
Battery Release Button- This button is used to lock and unlock the battery.